81442018 (number)

81442018 is an even 8-digits composite number following 81442017 and preceding 81442019. In scientific notation, it is written as 8.1442018 × 10^7. The sum of its digits is 28. It has a total of 6 prime factors and 48 positive divisors. There are 32749920 positive integers (up to 81442018) that are relatively prime to 81442018.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred forty-two thousand eighteen

Notation

Scientific notation 8.1442018 × 10^7
Engineering notation 8.1442018 × 10^6

Prime Factorization of 81442018

Prime Factorization 2 × 19 × 7 × 7 × 191 × 229

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 11634574
Product of the distinct prime numbers

The prime factorization of 81442018 is 2 × 19 × 7 × 7 × 191 × 229. Since it has a total of 6 prime factors.

Most popular turbo-numbers

10, 7, 78, 85, 495, 714, 4912, 8969, 15970, 89170, 876054, 672989, 3810463, 8013185, 3878472, 22990840, 189148865, 873010996, 124217218, 906194465

Basic calculations (n = 81442018)

Multiplication

n×y
n×2 162884036
n×3 244326054
n×4 325768072
n×5 407210090

Division

n÷y
n÷2 40721009
n÷3 27147339.333333
n÷3 20360504.5
n÷5 16288403.6

Exponentiation

ny
n2 6632802295912324
n3 5.4018880397413E+23
n4 4.399406629666E+31
n5 3.5829655392258E+39

Nth Root

y√n
2√n 9024.5231452969
3√n 433.46048116357
4√n 94.997490205252
5√n 38.209354884189

Divisors of 81442018

1, 2, 7, 14, 19, 38, 49, 98, 133, 191, 229, 266, 382, 458, 931, 1337, 1603, 1862, 2674, 3206, 3629, 4351, 7258, 8702, 9359, 11221, 18718, 22442, 25403, 30457, 43739, 50806, 60914, 87478, 177821, 213199, 306173, 355642, 426398, 612346, 831041, 1662082, 2143211, 4286422, 5817287, 11634574, 40721009, 81442018

48 divisors

τ Total Divisors 48
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81442017
Sum of the proper positive divisors of n
A Arithmetic Mean 0.020833333333333
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 1
Returns the nth root of the product of n divisors
H Harmonic Mean 48
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81442018 can be divided by 48 positive divisors. The sum of these divisors (counting 81442018) is 1, the average is 0.020833333333333.

Base conversion 81442018

Base System Value
2 Binary 100110110101011010011100010
3 Ternary 12200020200110001
4 Quaternary 10312223103202
5 Quinary 131322121033
6 Senary 12025330214
8 Octal 466532342
10 Decimal 81442018
12 Duodecimal 2333696a
16 Hexadecimal 4dab4e2
20 Vigesimal 159050i
36 Base36 1chl2a

Cryptographic Hash Functions

md5 a8e3c96cd920d9589128aa2813108df7
sha1 e2e0ce209da2a6c40839066dfefadd4c320121ea
sha256 4c73e7c2b77282c6df3c9f50591870cf53b20f7b2f313a8bda9f1dc5426fb8ed
sha512 0b3358993fc36cfd2280468db0875195895902b8443e8ea5ea5518273ff6b5e97c6dfc3fd15f505090f7d672c7c47e1177c989b92aacc087dc95c1c17423d4b3
ripemd-160 a5b678be49b1542273ff4dde0f72db279e50faae

81442018 as geometric shapes

Circle

Radius = n
Diameter 162884036
Circumference 511715290.88466
Area 2.0837562965552E+16

Sphere

Radius = n
Volume 2.2627375708221E+24
Surface area 8.3350251862207E+16
Circumference 511715290.88466

Square

Length = n
Perimeter 325768072
Area 6632802295912324
Diagonal 115176406.40263

Cube

Length = n
Surface area 39796813775473944
Volume 5.4018880397413E+23
Space diagonal 141061713.04694

Equilateral Triangle

Length = n
Perimeter 244326054
Area 2.8720876432699E+15
Altitude 70530856.52347

Triangular Pyramid

Length = n
Surface area 2.8720876432699E+15
Volume 6.3661861068527E+22
Height 38392135.467545